Siphon nozzle



May 19, 1970 M. E. PHELPS ETAL 3,512,719

SIPHON NOZZLE Filed April 5, 1968 I N V EN TORS. Maero/v E, PHEL p3TOM/WV O. 8544,

BY 49 f United States Patent 3,512,719 SIPHON NOZZLE Morton E. Phelps,715 Thomas St., Little Rock, Ark.

ABSTRACT OF THE DISCLOSURE A spray nozzle comprising four partsincluding a spinner member, with an orifice member disposed adjacentthereto, and an adapter member adjacent the orifice member with a capmember threadably engaging the adapter member so as to hold the partstogether in a sealed and proper relationship. The interior of theadapter member and the orifice member and the spinner nozzle member areprovided with passageways for passing a liquid and air therethrough soas to provide a rotating stream of air escaping from the nozzle in sucha way as to create a suction and pull liquid from the orifice member toprovide a spray emanating from the nozzle.

The present invention relates to a nozzle and more particularly to asiphon nozzle in which a liquid is discharged from the nozzle byutilizing a stream of whirling air to emit or discharge a spray ofliquid droplets which consist of discrete particles, or an atomizedmist.

*It is anobject of the present invention to provide a nozzle thatcomprises a simple four-part construction in which the parts are easilycleaned due to the size and shape of the two inner parts.

It is another object of the present invention to provide a nozzle whichprovides a substantially perfect sealing arrangement without thenecessity for gaskets.

It is another object of the present invention to provide an atomizingnozzle provided with air spinning flutes that are cut into the frontpiece of the assembly to greatly simplify the manufacture thereof.

It is yet another object ofthe present invention to provide a siphonnozzle which has relatively large holes therein and still has theefiiciency of the smaller holes used in other nozzles.

It is yet another object of the present invention to provide a nozzlethat has an access for free air around the discharge end of the nozzleto strengthen the carrying capacity without adding to the break up ofthe material being sprayed.

It is yet a further object of the present invention to provide a nozzlewhich has a relatively long discharge member to catch the whirlingliquid and create larger particle size.

It is yet another object of the present invention to provide a nozzlethat may be easily disassembled and reassembled without any special toolrequirement.

Another object of the present invention is to provide a nozzle that canbe easily mounted on a panel or a pipe support.

Yet another object of the present invention is to provide a nozzlehaving a structure which permits the use of any material such as brass,stainless steel and plastics. The parts of the nozzle may be made ofvarious plastic material such as nylon-delran and the like, and all ofthe parts are designed to permit injection molding. All of the parts canbe further made on screw machines with a minimum of additional machinework and the flutes in the nozzle and the eccentric air supply holes inthe adapter part of the nozzle are the only parts that must be made on amachine, other than a screw machine, when the parts are made on thescrew machine.

3,5 12,7 1 9. Patented May 19, 1 970 It is yet another object of thepresent invention to provide a nozzle in which the internal parts of thenozzle may be removed without disturbing the mounting of the nozzle on asupport member.

It is yet a further object of the present invention to provide athreaded section with nut means for mounting the nozzle on a panel.

Another object of the present invention is to make a nozzle with highefiiciency ratio of liquid delivered per cubic foot of air at a certainp.s.i.

Various other objects and advantages of the present inventiton will bereadily apparent from the following detailed description when consideredin connection with the accompanying drawing forming a part hereof and inwhich:

FIG. 1 is an elevational view partly in section illustrating the nozzleof the present invention;

FIG. 2 is a section taken along the line 22 of FIG. 1;

FIG. 3 is a section taken along the line3-3 of FIG. 2; and

FIG. 4 is an exploded view of two inner parts of the nozzle illustratinga modification of the spinner member so that a hose and the like can beattached thereto.

Referring to the drawing, the reference numeral 10 generally designatesthe nozzle of the present invention,

and is provided with an adapter member 12, a spinner discharge nozzle14, and a orifice member 16, and a cap member 18. The nozzle device ofthe present invention is further provided with a threaded nut 20 so thatthe entire assembly may be mounted on a panel 22.

The adapter member 12 comprises a hexagonal housing with a threaded airinlet bore 24 in the rear thereof, which communicates with alongitudinal air passage 26 drilled through the front portion of themember. The front end of the adapter member is provided with an annularcountersink or recess 28 therein, which communicates with the drilledpassage 26.

The adapter member is further provided in its periphery with an enlargedliquid bore 30 which is internally threaded, and which communicates witha drilled passage or hole extending substantially through the centralaxis of the adapter member. It will be noted that the hole 32 is furtherprovided with a small drilled hole 34 which connects the rear end of itwith the bore 30. The rear portion 36 of the adapter member is ofgreater diameter than the front or forward portion 38 which isexternally threaded, so that a shoulder 40 is disposed between these twoportions, and the adapter member is easily mounted on a panel 22 byinserting it through a hole in the panel and securing the threaded nut20 as best seen in FIG. 2.

Disposed centrally of the annular recess 28 is a tubular section 42which surrounds the drilled hole 32 and extends forwardly of the frontedge 44 of the adapter memher. The tubular section is tapered, asindicated at 46', so as to diverge outwardly and to form a seat for theorifice member 16.

The orifice member 16 comprises a substantially cylindrical centerportion 48 with a truncated rear portion 50, having an inwardly taperedor converging surface 52, which forms a seat that is adapted to form aseal with the tapered seat 46 of the tubular section 42. The cylindricalcenter portion 48 is cut away, as indicated at 54, so as to permit theend portion of the tubular section 42 to extend into the recess formed'by the annular cut-away portion 54.

The edge or surface of portion 48 disposed opposite the cut-away portion54, has a surface 56, which extends parallel to the bottom surface ofthe cut-away portion 54, as best seen in FIG. 2. This surface 56, whichis tapered rearwardly, is adapted to seat against a complementaryannular surface 58 on the rear of the spinner nozzle 14. A

3 drilled central hole or passage 60 is provided in the orifice member16 and communicates with the passage 32. It will be further noted thatthe surface 56 gradually or progressively bends into a forwardlyextending tu-bular section 62 adjacent the front end of the member 16.

The spinner discharge nozzle 14 comprises a substancia'lly cylindricalmember with a central passage 64 therein. The front end portion 66 ofthis nozzle 14 tapers inwardly as indicated at 66'. The rear end 68 ofnozzle 14 has a larger diameter than the intermediate portion 70, sothat a shoulder is formed between these two portions. The cap member 18comprises an internally threaded member with a hollow bore and anin-turned rim 72 adjacent the front end adapted to receive the nozzle14, so that the intermediate portion 70 seats on the rim 72, while therear of the rim and the shoulder between the portions 68 and 70 abuteach other.

Referring to FIG. 3, it will be seen that the rear of the spinner nozzle14 is provided with three circumferentially spaced flutes, which consistof drilled holes extending from the outer surface of the nozzle 14 to arear central passage 64 of the member 14. The rear passage 76 convergesinwardly and has its rear end provided with a diameter that issubstantially larger than the diameter of its forward end. The flutesextend in a somewhat radial direction and are spaced equidistant fromeach other.

The outside diameter of the orifice member 16 is substantially smallerthan the interior diameter of the cap member 18, and the annular recess28 and the cut-away rear 54 of the orifice member 16 are spaced fromeach other, so that these, along with the interior of the cap member 18,form an air cavity 78 internally of the cap member 18.

The passage 26 communicates with this air cavity 78, so that air passingfrom the bore 24 and through the passage 26 will enter this air cavity,as indicated by the arrows in FIG. 2, and pass around the orifice member16 and into the flutes 74, with which this cavity communicates.Thereafter, the air will enter the annular chamber 80 formed between therear central passage 76 of the nozzle 14 and the front surface of theorifice 16.

Referring to FIG. 2, it will be noted that there is a dotted lineindicated'as 82 extending transversely of the nozzle 14. This dottedline 82 indicates that the nozzle 14 may be cut off at this point, ifdesired, in order to control the droplet size of liquid being dischargedfrom the nozzle.

Referring to the embodiment of the invention shown in FIG. 4, it will benoted that the spinner nozzle indicated at 14 is substantially as thatillustrated in FIG. 2, except that the intermediate portion 70' does nothave a front tapered portion such as 66 in FIG. 2, but instead isprovided with a stepped, elongated tubular portion 66 and is formed intoa hose barb, so that a hose may be detachably connected thereto, and sothat the nozzle may be used as a fertilizer distributor. With thismodification of the nozzle, the liquid pump, commonly used to move fertlizer, can be eliminated, and corrosive chemicals can be handled withplastic parts without fear of corrosion.

In operation, air enters from the back of the nozzle 24 and passesthrough the drilled hole 26 and into the air cavity 78 and around theorifice member 16 and through the annular chamber 80, the air passingthrough the flutes 74 and then into the chamber 80. The flutes 74, beingdisposed off-center, cause a spinner or vortex of air to form and passover the leading edge of the passage 60. This vortex causes a suction todevelop near the end of the passage 60, which draws liquid through thepassage 32 and the passage 60, the liquid being supplied from a sourcenot shown through the bore 30. The vortex continues on until itdischarges at the front end of the spinner nozzle 14. The length of thespinner nozzle can be used to control the particle size of the sprayfrom drops to a fine mist. The longer the nozzle, the larger theparticles. If the escape chamber is Vs inch long, very fine mist 4 isproduced, and if it is one inch long, the liquid will just drip off theend.

The seat between tubular section 42 and the surface 52 forms a sealwithout a gasket. This holds the air away from the liquid or chemicalsflowing through the passage 32. The surface 56 and complementary surface58 also form a seal without the requirement of a gasket and these sealsare automatically maintained by properly threading thecap member 18 ontothe threaded portion 3-8 so as to maintain the parts in a proper sealedrelationship.

If it is desired to clean the parts, it is only necessary to unthreadthe cap 1'8 and the whole inner structure is revealed for inspection andcleaning. The general shape and design of this nozzle permits the use ofcomparatively large holes through the spinner nozzle and the orificemember. This helps to prevent stoppage and makes the unit much easier toclean.

It is also to be noted that the present invention permits easy cleaningof the flutes or air slots as they are accessible once the assembly istaken apart. It is also apparent that it is easily reassembled by merelyinserting the spinner nozzle into the cap member and, thereafter,placing the orifice member adjacent the spinner nozzle, and the assemblyis ready for securing to the adapter member by merely threading the capmember onto the threaded front portion 38.

Thus, from the foregoing description, it is apparent that the nozzle ofthe present invention embodies a simple, four-piece construction whichrequires no gaskets and uses relatively large holes and still has theefficiency of the smaller holes used by other nozzles.

Inasmuch as various changes may be made in the arrangement and locationof the several parts, it is not meant to limit the invention.

What is claimed is:

1. A nozzle comprising an adapter member with air and liquid passagemeans extending therethrough, a hollow cap member threadably secured tothe front portion of said adapter member, a spinner nozzle havingpassage means extending therethrough disposed in the front portion ofsaid cap member, an orifice member having a liquid passage extendingtherethrough disposed in said cap member between the front edge of saidadapter member and the rear of said spinner nozzle, said orifice memberhaving a cylindrical center portion with a cut-away, annular rear recesssurrounding a truncated rear portion, said adapter member having a fronttubular section extending into said annular recess of the orifice memberand having a tapered surface abutting a complementary surface of thetruncated rear portion of the orifice member to form a sealtherebetween, and said orifice member and spinner nozzle having engagingsurfaces forming a seal therebetween.

2. The nozzle of claim 1 wherein said cap member is of greater diameterthan said orifice member to provide an annular air chamber therearound,and said adapter member has an annular recess around said tubularsection, and said annular recess and cut-away recess and interior ofsaid cap member form an air cavity in communication with said annularair chamber and form a portion of said air passage means.

3. The nozzle of claim 2 wherein the front surface of said orificemember is tapered inwardly and forms said engaging surface with saidspinner nozzle and said spinner nozzle has a tapered rear edge whichforms said engaging surface with said orifice member.

4. The nozzle of claim 3 wherein the rear of said spinner nozzle isprovided with transverse extending air flutes in communication with saidannular air chamber and forms a portion of said spinner nozzle passagemeans.

5. The nozzle of claim 4 wherein said spinner nozzle is provided with anelongated, barbed front tubular section.

6. The nozzle of claim 4 wherein said flutes extend inwardly into aconverging bore forming the rear of said spinner nozzle passage means.

7. The nozzle of claim 6 wherein said cap member has an in-turned frontlip and said spinner nozzle has a shoulder seated thereagainst.

8. The nozzle of claim 7 wherein the front of said orifice member isbent gradually inwardly and terminates in an extending tubular sectionextending into said converging bore with which said flutes communicate.

9. The nozzle of claim 8 wherein said adapter member has a shoulder andnut means are threaded on said adapter member rearwardly of said capmember to mount it on a panel.

10. The nozzle of claim 4, wherein said spinner nozzle is provided withan elongated, front tubular section extended beyond the front surface ofsaid cap member.

References Cited 5 V UNITED STATES PATENTS 2,821,437 1/1958 Lesher239-403 2,984,420 5/1961 Hcssion 239405 M. HENSON WOOD, JR., PrimaryExaminer 10 M. Y. MAR, Assistant Examiner

